Norway is testing large-scale seaweed farming systems designed to capture carbon dioxide from the ocean while creating a new source of sustainable biofuels and green materials. • Seaweed farms naturally absorb large amounts of CO₂ during growth • Helps reduce ocean acidification and combat climate change • Seaweed can be converted into renewable biofuels and biogas • Requires no freshwater, fertilizers, or arable land • Grows rapidly in cold Norwegian waters • Can be used for fuel, animal feed,